Abstract
The phase behavior of a surfactant-like ionic liquid 1-tetradecyl-3-methylimidazolium chloride (C 14mimCl) in a room-temperature ionic liquid ethylammonium nitrate (EAN) is studied. The lyotropic liquid crystalline (LLC) phases formed in the binary mixture are thoroughly investigated by polarized optical microscopy (POM) and small-angle X-ray scattering (SAXS) measurements, and the temperature effect on the LC phases is also elucidated. Then, a hexagonal (H 1) LC phase was used to disperse multi-walled carbon nanotubes (MWCNTs). Both POM images and SAXS patterns indicate that, the dispersion of MWCNTs cannot break the structure of H 1 phase. By comparing the rheological properties before and after dispersing, it could be found that the incorporation of MWCNTs has increased the viscosity of H 1 phase.
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